“It may be argued that, this being so, one cannot expect to be able to mimic the behaviour of the nervous system with a discrete-state system”
Since a digital computer’s discrete-state system is nothing like the behavior of the nervous system, which does the thinking function for a human, machines would never be able to reach the “thinking” capability of humans unless humans completely redefine and optimize the infrastructure of a machine to create without discrete-state systems and with a more sophisticated system type.
“May not machines carry out something which ought to be described as thinking but which is very different from what a man does? This objection is a very strong one, but at least we can say that if, nevertheless, a machine can be constructed to play the imitation game satisfactorily, we need not be troubled by this objection.”
With the current state and machine type of digital computers, we cannot expect them to have thinking capabilities. Therefore, we should be content with their ability to be “satisfactory” in the imitation game. Machines may not “think” or have instincts, but we should be happy that they can mimic this behavior in their own way. Machines will remain in the uncanny valley until their infrastructure is optimized into something much more sophisticated.
You may read the rest of his article at: http://www.loebner.net/Prizef/TuringArticle.html